The HANNA HI 755 CheckerHC bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate and have low resolution while professional instrumentation can cost hundreds of dollars and can be time consuming to calibrate and maintain. The HANNA HI 755 CheckerHC is accurate and affordable.The CheckerHC features an accuracy of 5 ppm (mg/L) 5% of reading and uses the colorimetric method.

Designed to work with HANNA’s liquid reagents Uses 10 mL glass cuvettes

Small size, big convenience

Weighing a mere 64 g (2.25 oz.), the Checker®HC easily fits into the palm of your hand or pocket Use for quick and accurate on the spot analysis Single button operation: zero and measure Operated by a single AAA battery

Ideal for Saltwater Aquariums

The HANNA HI 755 Checker®HC bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate and have low resolution while professional instrumentation can cost hundreds of dollars and can be time consuming to calibrate and maintain. The HANNA HI 755 Checker®HC is accurate and affordable.

The Checker®HC features an accuracy of ±5 ppm (mg/L) ±5% of reading and uses the colorimetric method.

The contoured style of this Checker®HC fits in your palm and pocket perfectly and the large LCD is easy to read. The auto shut-off feature assures the battery life will not be drained if you forget to turn it off.

The HI 755 Checker®HC is extremely simple to use. After zeroing the instrument with your water sample, add the reagent to the cuvette and gently invert 5 times. Then insert the cuvette into the HI 755 Checker®HC and press the button to read the results. It’s that easy.

This Hanna Alkalinity Checker gives me precise readings and peace of mind when testing my parameters. Very easy test to do. Takes a couple minutes. Definitely will purchase all Hanna Checkers for each element I test. (Posted on 3/13/2015)

easy to use Review by Randy

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Quick and accurate. Easier to use than regular test kit. Definitely recommend. (Posted on 2/22/2015)

Hanna Alkalinity Checker Review by Mark

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I like how accurate this is. With chemical test kit I was not getting good readings all the time. (Posted on 1/24/2015)

A must have Review by michelle

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The hanna alkalinity checker is awesome very quick to use and very accurate definitely worth the money! Can't believe how easy it is to use. Makes testing much easier! (Posted on 12/24/2014)

Great product Review by Mark

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This is so easy to use, I switched from using salifert test kit. (Posted on 11/19/2014)